When she was 15 years old, An Kexia met "Xia Tian", a person as enthusiastic as summer. This mysterious transfer student named Xia Gu Ming unexpectedly became her deskmate at the beginning of school. In their daily interactions, they gradually opened up to each other and became friends.
After graduating from junior high school, Ankexia's mother decided to take her to live outside of China in order to have a better job. Because she had a conflict before, she left without saying goodbye to Xia Guming.
Many years later, on her birthday, she received a special gift, which was a diary without a signature.
"Classmate An Kexia, I like you, have you guessed me?" - "Diary"
Intention: Regret